EP 2097898 A1 20090909 - LENS SYSTEM FOR SCANNING DEVICE
Title (en)
LENS SYSTEM FOR SCANNING DEVICE
Title (de)
LINSENSYSTEM FÜR ABTASTVORRICHTUNG
Title (fr)
SYSTÈME À LENTILLE POUR DISPOSITIF DE BALAYAGE
Publication
Application
Priority
- IB 2007054704 W 20071120
- EP 06124803 A 20061127
- EP 07849185 A 20071120
Abstract (en)
[origin: WO2008065573A1] A lens system includes a lens (18) and a non-periodic phase structure (16). A temperature-dependence of the spherical aberration of the lens is compensated by a temperature dependence of the spherical aberration of the non-periodic phase structure. A wavelength-dependence of the defocus of the lens is compensated by a wavelength- dependence of the defocus of the non-periodic phase structure. A wavelength-dependence of the spherical aberration of the non-periodic phase structure is compensated by a wavelength- dependence of the spherical aberration of the lens.
IPC 8 full level
G11B 7/135 (2012.01); G11B 7/125 (2012.01)
CPC (source: EP US)
G11B 7/1275 (2013.01 - EP US); G11B 7/1353 (2013.01 - EP US); G11B 7/1372 (2013.01 - EP US); G11B 7/13922 (2013.01 - EP US); G11B 2007/0006 (2013.01 - EP US)
Citation (search report)
See references of WO 2008065573A1
Citation (examination)
WO 0148745 A2 20010705 - KONINKL PHILIPS ELECTRONICS NV [NL], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008065573 A1 20080605; CN 101542619 A 20090923; EP 2097898 A1 20090909; JP 2010511262 A 20100408; US 2010085861 A1 20100408
DOCDB simple family (application)
IB 2007054704 W 20071120; CN 200780043895 A 20071120; EP 07849185 A 20071120; JP 2009537729 A 20071120; US 51580707 A 20071120